●Material : 鉄 ●Washer Type : 平座金 ●Metal Type : 鉄 ●Brand : ノーブランド品 ●Iron or Standard ●The photo is a representative image
Description
The washer has 2 outer tongue-like protrusions By bending it parallel to one side of the nut, even if vibrations are applied, the nut will not rotate and have a loosening effect.